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04425292a6
Although commit75ddcd5ad4("Bluetooth: btusb: Configure altsetting for HCI_USER_CHANNEL") has enabled the HCI_USER_CHANNEL user to send out SCO data through USB Bluetooth chips, it's observed that with the patch HFP is flaky on most of the existing USB Bluetooth controllers: Intel chips sometimes send out no packet for Transparent codec; MTK chips may generate SCO data with a wrong handle for CVSD codec; RTK could split the data with a wrong packet size for Transparent codec; ... etc. To address the issue above one needs to reset the altsetting back to zero when there is no active SCO connection, which is the same as the BlueZ behavior, and another benefit is the bus doesn't need to reserve bandwidth when no SCO connection. This patch adds the infrastructure that allow the user space program to talk to Bluetooth drivers directly: - Define the new packet type HCI_DRV_PKT which is specifically used for communication between the user space program and the Bluetooth drviers - hci_send_frame intercepts the packets and invokes drivers' HCI Drv callbacks (so far only defined for btusb) - 2 kinds of events to user space: Command Status and Command Complete, the former simply returns the status while the later may contain additional response data. Cc: chromeos-bluetooth-upstreaming@chromium.org Fixes:b16b327edb("Bluetooth: btusb: add sysfs attribute to control USB alt setting") Signed-off-by: Hsin-chen Chuang <chharry@chromium.org> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
71 lines
2.1 KiB
C
71 lines
2.1 KiB
C
/*
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BlueZ - Bluetooth protocol stack for Linux
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Copyright (C) 2011-2012 Intel Corporation
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License version 2 as
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published by the Free Software Foundation;
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
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IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
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CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
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COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
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SOFTWARE IS DISCLAIMED.
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*/
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#ifndef __HCI_MON_H
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#define __HCI_MON_H
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struct hci_mon_hdr {
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__le16 opcode;
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__le16 index;
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__le16 len;
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} __packed;
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#define HCI_MON_HDR_SIZE 6
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#define HCI_MON_NEW_INDEX 0
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#define HCI_MON_DEL_INDEX 1
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#define HCI_MON_COMMAND_PKT 2
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#define HCI_MON_EVENT_PKT 3
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#define HCI_MON_ACL_TX_PKT 4
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#define HCI_MON_ACL_RX_PKT 5
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#define HCI_MON_SCO_TX_PKT 6
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#define HCI_MON_SCO_RX_PKT 7
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#define HCI_MON_OPEN_INDEX 8
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#define HCI_MON_CLOSE_INDEX 9
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#define HCI_MON_INDEX_INFO 10
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#define HCI_MON_VENDOR_DIAG 11
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#define HCI_MON_SYSTEM_NOTE 12
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#define HCI_MON_USER_LOGGING 13
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#define HCI_MON_CTRL_OPEN 14
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#define HCI_MON_CTRL_CLOSE 15
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#define HCI_MON_CTRL_COMMAND 16
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#define HCI_MON_CTRL_EVENT 17
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#define HCI_MON_ISO_TX_PKT 18
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#define HCI_MON_ISO_RX_PKT 19
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#define HCI_MON_DRV_TX_PKT 20
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#define HCI_MON_DRV_RX_PKT 21
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struct hci_mon_new_index {
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__u8 type;
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__u8 bus;
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bdaddr_t bdaddr;
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char name[8] __nonstring;
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} __packed;
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#define HCI_MON_NEW_INDEX_SIZE 16
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struct hci_mon_index_info {
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bdaddr_t bdaddr;
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__le16 manufacturer;
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} __packed;
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#define HCI_MON_INDEX_INFO_SIZE 8
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#endif /* __HCI_MON_H */
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